The grep command, which means global regular expression print, remains amongst the most versatile commands in a Linux terminal environment. It happens to be an immensely powerful program that lends users the ability to sort input based on complex rules, thus rendering it a fairly popular link across numerous command chains. The grep command is primarily used to search text or search any given file for lines containing a match to the supplied words/strings.

Quota allows you to specify limits on two aspects of disk storage: the number of inodes a user or a group of users may possess; and the number of disk blocks that may be allocated to a user or a group of users. The idea behind quota is that users are forced to stay under their disk consumption limit, taking away their ability to consume unlimited disk space on a system. Quota is handled on a per user, per file system basis. If there is more than one file system which a user is expected to create files, then quota must be set for each file system separately. Various tools are available for you to administer and automate quota policies on your system.

Benchmarking is the process of running some of the standard programs to evaluate the speed achieved by a system. There are a number of standard bechmarking programs and in this tutorial we benchmark the Linux system using a well known program called the HPL, also known as High Performance Linpack.

This guide shows how to remove a failed hard drive from a Linux RAID1 array (software RAID), and how to add a new hard disk to the RAID1 array without losing data. I will use gdisk to copy the partition scheme, so it will work with large harddisks with GPT (GUID Partition Table) too.

So, are you a person who got a raspberry pi (aka "pi") and want to start building something with it but don't know how to go about it? If yes, then this tutorial is for you. Here in this howto, we go about installing the Raspbian OS and initiating a desktop environment.

SSH stands for secure shell. It is an encrypted remote login protocol. Once it has been set up on each node, it can be used to communicate with various other nodes in that network. This tutorial covers public / private key authentication, the installation of public keys on remote servers and secure file transfers with SCP.

This document describes how to install and configure ProFTPD on a Debian Wheezy Server, it will also work on Ubuntu 14.04. ProFTPD is an FTP daemon for unix and unix-like operating systems. ProFTPD is developed, released and distributed under the GNU Public License (GPL), which basically establishes it as free software, meaning that it may be sold, licensed and otherwise manipulated in any way desired.

This article will explain the installation and usage of mytop, a handy tool for live monitoring of MySQL queries. Also looking into various operations that a user can perform while monitoring the queries on mytop.